Signal apparatus



Feb. 2 1926. 1,571,547

A. P. HAGAR l SIGNAL APPARATUS Filed Feb. 2l., 1924 2 Sheets-Sheet l ATTORNEY Feb. 2 1926. 1,571,547

A. P. HAGAR SIGNAL APPARATUS Filed Feb. 2l 1924 2 Sheets-Sheet 2 li lNvENToR ATTORNEY 20 pact-ly disposed.

Patented Feb. 2., 192%..

ARTHUR. P. HAGAR, @F NEVVARI', NEW JESSE?.

LNG 85 LGHTING ClllzVA-') A,

Pew I A o ASSIGNGR '.l() THE SAFETY CAR HEAT- CQR-PQEATON OF NEW' JERSEY.

SIGNAL APPARATUS.

Application filed February 21, 1924. Serial No. 694,323.

m it may concern; lle it unown tht-t y .,l). Il nu, a citizen of the Uniten States7 and a r sident of the city of Newark, county of Essex, and State of N ew Jersey have invented an lmprovement in Signal Apparatus, of which the following` is a specification.

'lhis intention relates to signal appa: atus and with regard to more specific features thereof to apparatus for trai'iic signals and the like.

@ne of the objects of the invention is to provide apparatus of the above nature practical and efficient and capable of n'ieet'ing the rerpiiremonts of use in a highly satis factory manner. finother object is `to pro vide apparatus of the above nature automatic in action and adapted to operate at all tunes dependably. Another object is to provide suce apparatus simple in construction and in which the various pai e com- Another object is to provide such apparatus adapted to operate with a high degree of economy. @ther objects will be in part obvious er in part pointed out hereinafter.

The `invention accordingly consists in the features of construction, combinations of elements, and arrangements of parts as will be exemplified in the structure to be herer described and the scope of the application of which will be indicated in the 'tellin-.ving claims.

lu the accon'ip-.inying drawings in which are iown yarious possible embodiments of feveral features of this invention:

die

Figure l 1s a vertical sectional elevation of a signal apparatus adapted for use 4as a traffic signah a part thereof being broken away inorder not to enoumbcr the drawing.

vshown ajstandard 1U of a suitable design for `positioning at the intersection of streets or highways, for example. rllhis standard 'is hollow in the form of a casi-ng and within its lower portion is adapted to accomodate a fuel reservoir such as a vgas tank 11. rlhe upper portion of the standard is preferably of reduced diameter as indicated at 12 and supported upon the top thereof is an annular vflanged member 13 substantially l.- shaped'in cross-section as'shown. This member 13 supports a suitable casing lll within which is positioned a source `of light, vthe mechanism of which is also supported by the member 13, as will be more fully described hereinafter.

rlhe casing 14 is formed of sheet metah for example and is preferably of a globular shape. A. chimney '15 is `provided to permit the escape of heat or products of combustion and this chimney7 preferably has an overhanging covering 16 for protection against rain and wind. The embodiment of the invention shown in the drawings s adapted to be positioned at the intersection of two streets or highways. The casing 14 is therefore provided with Vtwo pairs of oppositely disposed openings for the emission of light rays7 from the source of light within the casing, along the lines of direction of the two streets :or highways. These openings are provided with suitable lenses 17l preferably of plain uncolored glass. 'lfhe source of light is therefore adapted to be visible through Athe lenses 17 from either direction along each of the streets.

The light indicated generally by the numeral 18 in Figure 1 preferably takes the form or a burner and is supplied with energy from the gas tank 11 vin the bottom of the standard 10. The gas is stored under pressure in the tank 11 and is drawn olf through a pressure regulator 19 wherein .its pressure is reduced to a predetermined den si red value. This .pressureregulator 19 will not be described in detail herein, its constructmn being vprefere.bly that disclosed in the application of .lohn Rumpf. Serial No. 620,6-,3 filed February 24, 1923. The y taken from the pressure regulator 1Q is con ducted through a pipe or tubing .20 to mechanisms which will `presently be described and to the gasburner.

As shown in Figure l, and more clearly in Figures and 3,' there are positioned about the burner 18 four upright translucent screens 21, 22, 23 and 24. These screens are preferably of glass and the pair opposite each other are colored alike and in a color distinctive from that of the other opposite pair which are also colored alike. For example, the screens 21 and 23 may be colored green and the screens 22 and 24 colored rod. Light rays from the burner 18 in order to have exit through the lenses 17, must pass through these colored screens. Therefore, when the green colored screens 21 and 23 are positioned in line with a pair of lenses 17, a green light will be visible from each direction on the street along which these lenses 17 are directed, the green indicating that traiiic is open along that street. At the same time the red colored screens v22 and 24 are in line with the other two lenses 17 and a red light is visible from either direction on the street along which these lenses 17 are directed, the red light indicating that traffic is closed along` that street. By moving all of the colored screens around the burner 9()o the relative positions of the colored screens with respect to the light will be interchanged and thevcolor of lightrL ys visible from the respective streets will be interchanged. Y

Referring now particularly to Figure 2, the four colored screens 21, 22, 23 and 24 are mounted upon a suitable frame which is supported upon the flanged upper end 26 of a sleeve bearing 27. This sleeve 27 is rotatably mounted preferably through ballbearings 28 and 29 upon a vertical stationary shaft 30. The shaft 30 is supported in a plate member 31 which rests upon the vertical fiange of the annular supporting member 13 before described. The colored screens are therefor-e rotatable about the burner 18. As shown in Figure 4 the sleeve bearing 27 is provided with a pin 32 which limits the rotation of the sleeve bearing and of the colored screens by engagement with two stops 33 and 34 positioned on the upper surface of the plate member 31. The sleeve 27 maf,7 therefore rotate about the shaft 30 between the two stops 33 and 34 and the latter are so positiouedthat when the pin 32 is against either one of the stops, the four colored screens are positioned in line with the respective lenses 17, and further so that a rotation of the sleeve between the two stops moves the screens 990. Thus a rotation of the sleeve 27 in either direction between the two stops 33 a1id 34 interchanges the colors of the. light rays emitted from the lenses 17, opening the traffic on the street which was previously closed and closing the trafiic on the stret which was previously opened.

Secured to the rotatable sleeve 27 is an upright pin 35 about which is slotted the end 0f a lever 36, This lever 3,6 is riveted upon a supporting plate 38 secured to the plate member 31. A movement of the lever 36 about its pivot 37 will therefore rotate the sleeve 27. This lever 36 has an upwardly extending end 36a between which and the downwardly extending end 39a of a lever 39 is interposed a telescoping housing 40 containing a spring 41. This housing 40 bears against the arms 3G;t and 39a with tapered ends 40a and 40D and by means of this construction a substantially frictionless contact is had between the levers 35 and 39. rlhe lever 39 is pivoted upon the plate 38 at 42, as shown in Figure 3, and its righthand end 39b is provided with an opening through which passes a shaft 43. A rotation of the lever 39 about its pivot 42 througli the telescope spring connection 40 tends to bring the two levers 36 and 39 in line, placing' the spring` 41 under compression. The instant that the center line of the lever 39 passes beyond the pivot 37 of the lever 36, this compression in the spring 41 is released and quickly rotates the lever 36 about its pivot 37. rllhis movement of the lever 36 rotates the sleeve 27 between the two stops 33 and 34 and turns the colored screens through 900.

rIhe shaft 43 is preferably provided with two collars 44 and 45, having tapered portions making Contact with the end 39b of the lever 39 so that axial movements of the shaft 43 are imparted to the lever 39 to rotate th, latter about its pivot 42. The shaft 43 is connected through clamping nuts 4G to a diaphragm 47, the action of which will presenti?,7 be described.

Turning now to Figure 2, there is shown he pipe or tube 2() through which gas is led from the tank 11 and pressure regulator 19. Part of the gas from this pipe 2O passes upwardly hrough a pipe 48 and thence through a passage 49 shown in Figure 3 to a pilot burner 50. A needle valve 51 regulates the flow of this gas to the pilot burner 50. The remainder of the gas from the pipe 2O passes through a pipe to a needle valve 53, This valve 53 courols the flow of gas from the pipo :32 lo a passage 54 formed in a boss upon the cover plate 56 of a casing 57. rlhis casing supported upon the s'upi'iorting plato 38, and with the cover plate'i' and diaphragm -'il-7 opposite thereto. forms a chamber 58. The diaphragm 47 is therefore rev spousive to gaspres-fure within the chamber 58 and movements thereof in relpoi gas pressure are imparted to the levr- A pipe 59 is adapted to be in commiuuration with the chamber 58 through a pas sage GO and a valve seat (il or through a passage (52 and a valve seat (33. ihe pas4 sage 54 to which gas is admitted from they pipe 52 through the needle valve 53 is in COllllliUlieation through a past' -re 64 with the pipe 59 through the passage @0 and with the chamber tfln'oug'h the valve seat lL The passages through the valve seats 6l and '53 are eentrolled b v valves (S5 65 respectively which are niennted upon a rocher arn'i 6T nivo-ted as at @El unen a boss (S9 et the Cover pla-te 5S, shown more elearlg7 in Figure Pivoted at '[0 apen another bossi?. et the eever plate is av substal tiallv U-shaped leve?" 72 which extend ennesite the ends et the pivoted valve Carri/.ingr nieinher 67. Eetiveen thes arms ot the lJ-shapeil ineniber 2'2 and the respective ends et the ineinher 67 are interno fil spiral compression springs i753 and 74. iiuiinh are adgastable thi" ugh the ereu's 75 and nuts 76. Piveted upon the U-sha'nel nieinber 72 as at 7i" is a nieinher 78 connected through inns T9 to nieve in response to movements ofthe cliaphranj isha'tt 43. This n'ieinhei 7S has a projecting' part 78a which is slotted to receive tie bent end et a lug 8U ,d unen the @ever plate 55. The Connection between the shaft A153 and the niet" "t et the nieinl'uer annut its pivot snans er (i7 abeut its Y il pivotclosingi' et' the other.

Considering' new nieve nartieularlv the operation et thi" apparatus, it will he assinned al'. startin tnat the mechanism is "he nesitien shawn in Fi 3. The pin 32 on the rotatable sleev "w is a"ainst the sten E?, and the eelerecl sei'eens QSL 22, 23 and'Q-t are pesitiened in line with the respective lenses 1'5". Gas at the re 'uired nressure is drawn the ire 1 'e5i'nlator l) thren A pine F20 and a snall ainonnz thei'ee'si passes threv i the nine T-8 to the inlet hu u' 50. 'ihe r naindei' et theeas trom the nine Q'I) na es thi'nugzjh the pine and its entrante therefrom te passage Sfiis regulated hv the valve The fijas there onen travere'uw' the pressi bei() passage 64h its with is (lividell. rii't lien to the gaine through the nassafe {'31} and the rlmiaiiulei' entering; the eiiafnher 35'? threufe seal' fil.

l the valve '1 te .mild i .in the ehanil'er :and the dini) ii'aejm starts te nieve 0 itrd The member TS in ii'esponse to the alia-ihr .ein swings about n'fil the inl-av permitted bv eenneetien 78a is taken up. Upon Ui ent o'L the diaphragm the imanes i1 @renter-clockwise di.-

tion as viewed in Figure 3 strainsv up jy in the springs TB and Til. At the finstant that 'these springs pass beyond center with respect te 'each other, the nieniber 67 is quickly snapped about its pivot by the springs 73 and 74. Closing; the valve 65 and ripening; the valve 66. The entrance to the ehan'iher .'38 'being new closed, the gas discharges trein the Chan'iber 58 through the valve seat 63 and rpassage 62 te the pipe 59. lt Will be seen that a continual supply et gas is had to the pipe 52% the passage (S0 maintaining'. this supply While the valve 66 is closed. Through this nine 59 the lgaas is led to the burner 18 as Will be described.

The outward nievenient ot the diaphragm Il?? as vabove described, `through the shaft L3 sivingl's the lev-ei," 39 about its pivot 42. T his tncwnent et the lever S9 lessens the 'dis- 'anee between the points 40a and '4;0), eeni- )ressingthe sp1-ing 4l. As soon as the lever 35h swinging about its axis in eeuntei'ecleelwise d'iii'eetlioiu passes bevond the nivel; @if the lever 36, the energy stored in the spring' fl Quickly swings the lever' SG about pivot 37. This nievenient et the lever sleeve 52;? until the pin striles the stop Se, thus rotating' the eelered screens thi' )ugh 900 and'interehanging the Colors et the l' rays emitted alone; Vthe tive intersee streets or highways.

-lfnternesed between the lever S9 and a 8l en the 'easing'l is a serine; @2 ivhi adjustable through the threaded eonneetien et its supporting; shaft 853 With the lngrl fand a leek nnt'lh As the lever` 39 swings in eeunter-eleelivise dil'eetien about its nivel; l2 in respenseto outward nioveinent et the diaphragm 4'?" the spring' S2 is eenlpressed.

VThe parte are noiv in the nositien shown in Figure il. The valve is open and les fl'seharejee treni the ebaniher 58 resulting; in iduetien of pressure therein- Vlhe spring? i'nds` swinging; the lever in a (fleckivif-te direction and 'fereiun' the diaphragm invai'dlv a in tie reas n'essure .in the chamber eeereaees, The spring is strenger than the sin-ingr el and enel is ine' the valve G6 a d e Y y'e 65 t-hi'eneh the eeninres'l'ien a; ase et the snrinejs Tf'and Tal. The n to the positien sheivn in Figure 3 and ,i again entering; the chamber 58, through the valve seat @L the aletionis repeated.

Referring novv to Figures 2 and v3, the- 365 'through the nin quickly rotates the tiff pipe 59 leads to a chamber 85 formed in a boss 8G which supports the burner 18 and which is a part ot a cover plate 87 for a casing 88. A needle valve 89` controls the supply of gas from the chamber to the interior of the casing 88 and the mechanism therein. From the interior of the casing 88 the gas is led to the burner 18. This casing 88, with the mechanism contained therein, comprises a device for intermittently cutting ofi the flow or gas to the burner 18 to give a flashing light. The de.- tails of this construction are not shown noil described herein since the construction employed is preferably substantially that shown in the application of John Rumpf, Serial No. 621,122, tiled February 26, 1923. However, itI is to be noted that the valve 89 controls the rate of lloW of gas to the burner 18 from the pipe 59 and hence the rate of discharge of gas from the chamber 58. The flashing mechanism, comprising the casing 88 and supporting the burner 18 and pilot burner 50, is preferably mounted upon the shaft 80 Which is also holloWed out to permit passage of the pipes 48 and 59. lt Will be seen that there is described above a signal apparatus adapted for use as a highway signal and providing an automatically operated traiiic directing device When placed at the intersection of two streets, this device displays a green light along one ot the streets .and a red light along the other, and the colors of these lights are automatically interchanged at predetermined intervals of time. The period of time during which one color of light is directed along one of the streets may be regulated by adjustment of the valve 53 controlling the rate of flow of gas entering the chamber 58, and the period of time during which the other color of light is directed along the same street may be regulated by adjustmentof the valve 89 which controls the rate oi" discharge of gas from the chamber 58. rllhese periods being thus independently adjustable may be varied to any desired ratio. For example, if the signal apparatus is placed at intersecting high- Ways, the periods of time ot indicating` open tratti-c on the two highways may be adj, usted in proportion to the amount and importance ot the tral'lic on these highways. .l`he api'iaratus is economically operated and thoriuighly dependable at all times, attaining many inactical and useful advantages.

is many possible embodiments may be made oli' the above invention and as many changes might be made in the embodiment above set forth, it is to be understood that4 all matter hereinbefore set forth is to be interpreted as illustrativ and not in a limitmg sense.

l claim as'my invention:

1. In signal apparatus, in combination, a

gas light, means adapted to give light rays omitted therefrom a predetermined color, means adapted to give said light rays a second predetermined color, means actuated by the flow of gas to said light adapted to render said two coloring means effective alternately upon said light rays for predetermined periods of time, means for adjust-- ing the length of said period of time during which said lirst coloring means is eiect-ive upon said light rays, and means for adjusting the length of said period of time during which said secondc'oloring means is effective upon said light rays.

2. In signal apparatus, in combination, a gas light, means adapted to direct light. rays therefrom in two predetermined directions, a coloring means, a second coloring means, and means actuated by the ioW ot' gas to said light adapted simultaneously to render said first coloring means effective upon rays directed in one of said directions and said second coloring means elfective upon rays directed in said other direction :tor a predetermined period of time, and adapted simultaneously to render said lirst coloring means effective upon rays directed in said last direction and said second coloring means eective upon rays directed in said first direction for a predetermined period of time.

3. In signal apparatus, in combination, a gas light, means about said light comprising a member adapted to permit passage of light rays of a. predetermined color and a second member angularly disposed relative to said iii-st member adapted to permit passage ot light rays of a second predetermined color, and means actuated by the iow of gas to said light adapted to move said first means at predetermined intervals or time to interchange the position of said tivo members with respect to the path of predetermined rays from said light.

4. In signal apparatus, in combination, a gas light, means about said light comprising a member adapted to permit passage of light rays of a predetermined color and a second member adapted to permit passage of light rays ot a second predetern'iined color, and means actuated by the llow ot gas to said light adapted to move said first means intermittently to position the same about said light with said tivo lnen'ibors in predetermined position with respect, to said light for a predetermined period ot time and to position the same about said light with the position oi said two members interchanged With respect to said light tor a second predetermined period ot' time.

5. In signall apparatus, in combination, a gas light, a device rotatably mounted adjacent said gas light comprising a light screening member, and means actuated by the flow of gas to said light adapted inter- (lll (i. :ln-sil il apparatus in combination, a stancrd adapted to be posit cned at a highway interse 5. standart haring a paralong each of said highn a gas burner within sjd casing, a source ot gas supply within said standard, means itorleadingj said gas ilfrom said source to said burner, means within said using adapted to distinctively color light rays from said br ucr directed along said respective highways, and means actuated by the flow of gas to said burner at apted at predetermined intervals or time to more said last means to interchange the colors ot said light rays directed along said respective highways. l n

i'. ln signal apparatrs7 in combination, a gas burner, a movable color screen, means adapted to lead a supply ot `gas to said burner, i'iieans actuated by said ilow ol gas adapted to intermittently and substantially instantaneously more said screen into and out ot the path ot' predetermined rays from said burner, and means 'for independently adjusting the lengths of time during which said screen remains respectively inand out oil the path el' said rays.

8. ln signal apparatus, in combination, a gas burner, a` pair ot color screens of distinctive colors, means adapted to lead a supply ot gas to said burner, means actuated by said tlow et adapted intermittently suletantia-llf; simu cautiously to more one ot said color screens into and ha the p i pported by said for light rays mid i et ive si path et said rays.

f). ln signal apparatus, in combination, a gas light, a device about said gas light comprising tour color screens, two thereof being ot like color and positioned substantially 1800 apart and the other two ot like color distinctive from said First color and positioned substantially 1800 apart being positioned resgectively between said first two screens` means for leading gas to said burner, and means actuated by. the flow ot saidother out ot.

leading from said source, an outlet passage from saidchamber ,leading to said burner, a talve mechanism adapted in one position `to open said inlet passage and close said outlet passage and in another position to close said inlet passage and open said outlet passage, a diaphragm exposed to gas pressure within said chamber and movable outwardly inresponse to flow el gas into said chamber from said source. at opening. ot said inlet, spring means adapted to more said diaiihragm inwardly upon low of gas from said chamber to said burner at opening ot said outlet, a connection. between said valve mechanism and said-diaphragm adapted to more said valve mechanism intermittently from one et its said positions tothe other vin conjunction with intermittent in andout movement. ot said diaphragm, a movable li ,ight screening member mounted adjacent said burner, and a connection between said diaphragm and. said screen: adapted upon predetermined'movement ofk the former in one direction to substantially instantly more the latter into the path of predetermined rays from said burner and adapted upon predetermined movement of said diaphragm in the opposite direction to substantially in stantly move said screen out ot the path ot said predetermined rays. i

1l. In a signal apparatus, in combination, a gas burner, a source of gas supply, a pressure chamber between said source and said burner, an inlet passage to said chamber leading from said source, an outlet passage fromsaidchamber leading to said burner, a valve mechanism'adapted in one position to opensaid inlet passage and close said outlet passage andin another position to close :sai-d inlet passage and open said outlet passage, `a diaphragm exposed to gas pressurewithin said chamber and morable outwardly'in response to flow oit' into said chamber 'from said source at opening of saidl inlet, spring means adapted to. more said' diaphragm inwardly upon flow ot gas from said chamber to said lnirnerk at opening of said outlet, a connection between said valve mechanism and said diaphragm adapted to move said valve mechanism intermittently from one of its said positions to` the other in` conjunction with intermittent in and out movement oit said diaphragm, and. mea-ns actuated by the movements ol said diaphragm adapted intermittently to change the color of light rays emitted in predetermined direction trom said burner.

l2. ln signal apparatus, in combination, a gas burner, a source of gas supply, a gas pressure chamber between said source and said burner, an inlet passage to said chamber leading from said source, an outlet passage from said chamber leading to said burnerQa valve mechanism adapted in one position to open said inlet passage. and close sifd cutlll) lill) let passage and in another position to close said inlet passage and open said outlet passage, a diaphragm exposed to gas pressure within said chamber and movable outwardly in response to flow of gas into said chamber from said source at opening of said inlet, spring means adapted to move said diaphragm inwardly upon flow of gas from said chamber to said burner at opening of said outlet, a connection between said valve mechanism and said diaphragm adapted to move said valve mechanism intermittently from one ot its said positions to the other in conjunction with intermittent in and out movement ot said diaphragm, means about said burner comprising a member adapted to permit passage of light rays of a pred-etermined color and a second member angularly disposed relative to said iirst member adapted to permit passage of light rays of a second predetermined color, and means actuated by the in and out movements ot said diaphragm adapted to move said last means to intermittently interchange the positions of said two members with respect to said burner.

13. In a signal apparatus, in combination, a gas burner, a source ot gas supply, a gas pressure chamber between said source and said burner, an inlet passage to said chamber leading` from said source, an outlet passage from Said chamber leading to said burner, a valve mechanism adapted in one position to open said inlet passage and close said outlet passage and in another position to close said inlet passage and open said outlet passage, a diaphragm exposed to gas pressure within said chamber and movable outwardly in re sponse to flow ot' gas into said chamber from said source at opening of said inlet, spring means adapted to move said diaphragm in wardly upon low of gas from said chamber to said burner at opening of said outlet, a connection between said valve mechanism and said diaphragm adapted to move. said valve mechanism intern'iittently trom one ot' its said positions to the other in conjunction with intermittent in and out movement ot said diaphragm, a device rotatably mounted about said burner comprising tour color screens, two thereof being ot like color and positioned substantially 180O apart and the other two being ot like color and distinctive irom said iirst color and positioned substantially 180o apart, being positioned reber leading from said source, an outlet passage from said chamber leading to said burner, a. valve mechanism adapted in one position to open said inlet passage and close said outlet passage and in another position to close said inlet passage and open said outlet passage, a diaphragm exposed to gas pressure within said chamber and movable outwardly in response to flow ot gas into said chamber from said source at opening ot said inlet, spring means adapted to move said diaphragm inwardly upon iiow ot gas from said chamber to said burner at opening oi said outlet, a connection between said valve mechanism and said diaphragn'i adapted to move said valve mechanism intermittently trom one ot its said positions to the other in conjunction with intermittent in and out movement ot said diaphragm, a device rotatably mounted about said burner comprising four color screens, two thereo'l being of like color and positioned substantially i800 apart and the other two being of lil-Ie color and distinctive from said iirst color and positioned substantially 180o apart, being positioned respectively between said tirst two screens, and means actuated b v the in and out movements of said diaphragm adapted to oscillate said device through substantially .90o to interchange the positions of said respective colored screens with respect to said burner;

l5. In signal apparatus in combination, a gas burner, a source of' gas supply, a gas pressure chamber between said source and said burner, an inlet passage to said chamber leading from said source, an outlet pas sage from said chamber leading to said burner, a valve mechanism adapted in one position to open said inlet passage and close said outlet passage and in another position to close said inlet passage and open said outlet passage, a diaphragm exposed to gas pressure within said chamber and movable outwardly in response to tlow of gas into said chamber :tro-m said source at opening ot said inlet, spring means adapted to move said diaphragm inwardly upon -flow of gas trom said chamber to said burner at opening ot said outlet, a connection between said valve mechanism and said diaphragm adapted to move said valve mechanism intermittently from one ot its said positions to the other in conjunction with intermittent in and out movement of said diaphragm, means adjacent said burner con'iprising a member adapted to give light rays therefrom of predetermined color and a member adapted to give said light rays a second predetermined color, and a connection between said coloring means and said diaphragm adapted upon predetermined movement of said diaphragm in one direction to substantially instantlly render one ot said coloring means effective upon predetermined light rays trom said burner and adapted upon jundetermined movenient oiL said diephragin in the other direction to substantially instantly render said other coloring member eli'ective upon said predetermined rays.

1G. ln signal aiiiparatus, in combination, a gas burner, a source ort gas supply, a gas pressure chamber between said source and said burner, an inlet passage to said chamber leading from said source, an outlet pas; sage from said chamber leading to said imi-ner` a valve mechanism adapted in one position to open said inlet passage and close said outlet passage and in another position to close said inlet passage and open said outlet passage, a diaphragm exposed to gas within said chamber and movable v in response to tlou oi gas into said chamber troni said source at opening ot said inlet, spring means adapted to move d diapl'iragin inwardly upon tlow'oil trom said chamber to said burner at opening of said outlet, a connection between said valve niechanism and said diaphragm adapted to move said valve mechanisn'i intermittently from one ot its said positions to the other in conjunction with intermittent in and out movement ot said diaphragm, means actuated by the movements et said diaphragm adapted interniiittently to change the color ot" light rays emitted in predeter# mined direction 'from saidL burner, and

means exterior ot said chamber 'for leading gas from said source to said burner to continually supply said burner irrespective ot' the opening and closing o't' said valves.

17. In signal apparatus, incombination, a burner, a source of supply, a gas pressure chamber between saidV source and said burner, an inlet passage to said chamber leading trom said source, an outlet passage trom said chamber leading to said burner, a valve mechanism adapted in one position to open said inlet passage and close said outlet passage and in another position to close said inlet passage and open said outlet passage, a diaphragm exposed to gas pressure within said chamber and movable oiiitwardly in response to flow of gas into said chamber from said source at opening oft said inlet, spring means adapted to move said diaphragm inwardly upon flow of gas 'from said chamber to said burner at opening of said outlet, a connection between said valve mechanism and said diaphragm adapted to move said valve mechanism intermittently from one of its said positions to the other in conjunction with intermittent in and out movement ot said diaphragm, means ac tuated by the movements of said diaphragm adapted intermittently to change the color ot light rays emitted in predetermined dircctien lrom said burner, ann means for .inn

dependentlv adjusting the rate ot noven'ient ot said diaphrag t :cach direc-tia,

18. ln signal apparatus, lin combinat on, a gas burner, a source otl gas suj :plya p .sage `t'or gas frei i said supply to saidbiufner, a diaphragm exposed to gas pressure in said passage, means actuated by the flow of said gas` adapted to give said diaphragm a baci; and forth movement, a movable light screening member adjacent said burner, and a connection between said screening member and said diaphragm adapted upon predetermined movement ot said diaphragm in one direction to substantially instantly move said screening member into the path ot predetermined rays from said burner and adapted upon'predetermined movement ot said diaphragm in the opposite direction to substantially instantly move said screening member out of the path oit said predetermined rays.

19. In signal apparatus, in combination, a gas burner, a source oit gas supply, a passage tor gas from said supply to said burner, diaphragm exposed to gas pressure in said passage, means actua-ted by the dow ot saidgas adapted to give said diaphragm a back and forth movement, a movable light screening member adjacent said burner, a connection between Said screening member and said diaphragm adapted upon predetermined movement of said diaphragm in one direction to substantially instantly move said screening member into the `path of predetermined rays from said burner and adapted upon predetermined movement ot said diaphragm in the opposite direction to substantially instantly7 move said screening member out of the path of said' predetermined rays,v and means for independently adjusting the rate or" movementof said diaphragm in each direction.

20. ln signal apparatus, in combination,

a gas burner, a source of gas supply, a pas sage tor gas from said supply to said burner, a diaphragm exposed to gas pres sure in said passage, means actuated by the How of said gas adapted to give said diaphragm a vibratory movement, a device rotatably mounted about said burner comprising a plurality of color screens, and means actuated by the vibrations of said diaphragm adapted at predetermined intervals of time and substantially instantly to rotate said device through a predetermined angle.

21. In signal apparatus, in combination, a gas burner, a source of gas supply, a passage tor gas from said supply to said burner, a diaphragm exposed to gas pressure in said passage, means actuated by the flow of said gas adapted to give said diaphragm a vibratory movement, a device rotatably mounted about said burner comprising four color screens, two thereof being of lll() like color and positioned substantially 180O apart and the other two being of like color and distinctive form said iirst color and positioned substantially 180O apart, being respectively positioned between said first two screens, and means actuated by the vibrations or" said diaphragm adapted inten inittently to rotate said device thro-ugh sub# stantially 900 to interchange the positions of said respective colored screens with respect to said burner. Y

22. In signal apparatus, in combination, a standard adapted to be positioned at a highway intersection, a gas burner upon said standard, a` casing upon said standard about said burner having means adapted to permit passage of lightI rays from said burner along each of said highways, a. source of gas supply within said standard, means for leading @as from said source to said burner, a `rotatable device within said casing about said burner comprising a plurality of color screens adapted distinctively to color the light rays directed from said burner along each of said respective highways in both directions, and means actuated by the 'liow of gas to said burner adapted at predetermined intervals of time to rotate said de vice to change the coloring of the light rays directed along each ot' said respective highways in both directions.

23. In signal apparatus, in combination, a standard adapted to be positioned at the intersection of two highways, a gas burner upon said standard, a casing upon said standard about said burner having means adapted to permit passage of light rays from said burner along each of said highways, a source of gas supply within said standard, means for leading gas from said source to said burner, a rotatable device within said casing about said burner comprising four screens adapted to distinctively color the light rays directed from said burner along each of said respective highways in both directions, and means actuated by the flow of gas to said burner adapted at predetermined intervals of time to rotate said device through substantially Q0C to interchange the coloring of the light rays directed along each of said highways'in both directions.

2li. In signal apparatus, in combination, a standard adapted to be positioned at a highway intersection, a gas burner upon said standard, a casing upon said standard about said burner having means adapted to permit passage of light rays from said burner along each of said highways, a source oi gas supply within said standard, means tor leadinggas from said source to said burner, a rotatable device about said burner coniprising tour color screens, two thereof being oit like color and positioned substantially 1800 apart and the other two of like color distinctive from said iii-st color and positioned substantially 1800 apart being positioned respectively between said first two screens, and means actuated by the flow of said gas to said burner adapted at predetermined intervals of time to rotate said device through substantially 90 to interchange vthe positions of said respective screens with respect to said light.

25. In signal apparatus, in combination, a gas burner, a source of gas supply, a passage for gas from said supply to said burner, a pressure chamber in said passage, a diaphragm in said chamber, a valve mecha nism actuated by said diaphragm adapted to cause intermittent flow of gas througl said chamber to said burner, means actuated by the movements of said diaphragm adapted intermittently to change the color of light rays emitted from said burner, and a passage ior gas from said source to said burner exterior of said chamber to provide ior a continuous supply of gas to said burner.

In testimony whereof, l have signed my name to this specification this 6th day ot February 1924. A

ARFIHUR l?. HAGAN. 

